EP0704085A1 - Procede et dispositif permettant de produire des images bi- ou tridimensionnelles dans des substances gazeuses - Google Patents

Procede et dispositif permettant de produire des images bi- ou tridimensionnelles dans des substances gazeuses

Info

Publication number
EP0704085A1
EP0704085A1 EP94920440A EP94920440A EP0704085A1 EP 0704085 A1 EP0704085 A1 EP 0704085A1 EP 94920440 A EP94920440 A EP 94920440A EP 94920440 A EP94920440 A EP 94920440A EP 0704085 A1 EP0704085 A1 EP 0704085A1
Authority
EP
European Patent Office
Prior art keywords
laser
image
light
laser beams
focusing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94920440A
Other languages
German (de)
English (en)
Other versions
EP0704085B1 (fr
Inventor
Klaus Gustav Wende
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0704085A1 publication Critical patent/EP0704085A1/fr
Application granted granted Critical
Publication of EP0704085B1 publication Critical patent/EP0704085B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/16—Advertising or display means not otherwise provided for using special optical effects involving the use of mirrors

Definitions

  • the invention relates to a method and a device for generating two- or three-dimensional images in gaseous media, in particular in the earth's atmosphere.
  • Fig. 1 shows the schematic structure of a device according to the invention with two laser beam deflection systems
  • Fig. 2 shows the entire arrangement in a block diagram
  • the invention is based on the fact that nitrogen and oxygen molecules can be ionized in very large electrical fields (field ionization), and that when an electron is recombined or recaptured, energy is released which is then visible to the molecule in question as light radiation (flash of light) Spectral range is given. If such lighting phenomena are caused at given points, for example a two-dimensional or three-dimensional matrix, a two- or three-dimensional image can be produced. A point of light that is repeated at approx. 25 Hz appears to the viewer as standing. The human eye has a resolution of about 1 minute of arc. At a distance of 100 m from the image to be generated, a line can therefore be drawn if the light points generated are approximately 3 cm apart.
  • the light spots are generated by bundling one or more laser beams, which preferably emit outside or at the edge of the visible spectral range, at the intended location where the light spot is to appear.
  • the corresponding device is shown in FIG. 1.
  • Laser beams or beam pulses are generated by one or more lasers (1)
  • the laser beam falls onto a focusing mirror (4), which focuses the received laser light and focuses it at a distance of 10-100 in a narrow area, in which the field strength then becomes so high that the atmospheric gases contained therein , mainly nitrogen and oxygen, are ionized. Because of the high probability of recombination, the ionization is immediately followed by the laser pulse.
  • a C0 2 laser or a YAG laser is used. Such a laser emits in the infrared spectral range, so that the observers cannot see the laser beam, but only the effect caused by it, ie the light flash (9) or the image composed of such light flashes (9).
  • the expansion mirror (3) shown in Fig. 1 can also be used for beam deflection, so that - analogous to the deflection of an electron beam in a black and white television picture - the focus of the
  • Laser beam pulses scans a given point matrix and generates light flashes (9) at those matrix points that are to appear bright in the image.
  • the focusing mirrors have a diameter of 30 to 50 cm, for example.
  • Both mirrors preferably the entire beam deflection system
  • Tons are used.
  • the two laser beams shown in FIG. 1 do not necessarily have to be in phase at the focusing point his. The only thing that matters is that enough molecules of the atmospheric air are ionized. However, if phase correctness is achieved, an increase in the field strength at the focal point is to be expected, so that the luminous efficiency increases.
  • the optical device (3) with which the laser beam is deflected so that its focal point scans the rows and columns of the intended image, can be equipped with piezo elements. These piezo elements move the deflection mirror and thus achieve beam deflection. So-called scanners are also possible, e.g. rotating mirrors with electrical coil arrangements, as well as so-called Bragg reflectors.
  • the spatial depth, i.e. the third dimension can be achieved by changing the focal length of the optical device (zoom).
  • the laser beam is sent to individual parallel amplifiers in each case after preamplification via a mirror system.
  • the 10 individual laser beams are directed onto the common focus lens via separate deflection systems and focused at the intended pixels, for example, at a distance of about 100 m from the focus lenses. Since the repetition frequency of the laser pulses can be 5 kHz, 50,000 light points per second can be generated with this system. This is sufficient, for example, to produce a neon sign floating in free space.
  • the components of the deflection device are shown schematically in FIG.
  • the entire control is synchronized to the laser beam source (1).
  • electrical signals are derived from the laser pulses with a trigger pulse generator (8), which signals are used in the computer control (6) for triggering the deflection device.
  • the position data available in a storage unit are called up in the computer control (6) and processed into signals which are fed to the optical device (3), which then independently sets the positioning units for the deflection mirrors.
  • the next position data is provided by the storage unit during the setting time.
  • the setting of the positioning units (7) is completed and the next light pulse is emitted by the synchronization source, which now generates the first image and at the same time acts as a trigger for the setting of the next positioning process.
  • a photo transistor can be used in the trigger pulse generator, the input signal of which is converted into a digital signal in an AD converter.
  • a standard office computer with a RAM memory capacity of more than 40MB can be used as the storage unit, for example.
  • the required position data for the pixels to be generated are stored in this memory.
  • One byte contains the information for a positioning unit.
  • the ready data are transmitted to the positioning units (7) on the basis of the trigger signal. After the data has been transferred, the edge position data are provided.
  • Each positioning unit (7) consists of a separate electrical control and a mechanical part.
  • the mechanical part can consist of a rotary magnet, for example, which is set to the 16 possible positions by fixed resistors.
  • a servomotor stepper motor

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

L'invention concerne un procédé permettant de produire des inscriptions lumineuses ou des images bi- ou tridimensionnelles flottant librement dans l'air. A cet effet, des faisceaux laser dont la fréquence d'émission se situe de préférence en dehors du domaine spectral visible sont focalisés à des endroits de chacun des points d'image clairs à produire, de manière à déclencher des éclairs lumineux dans l'atmosphère, générés par exemple par ionisation de champ des molécules d'air et par recombinaison ultérieure. Le point de focalisation des faisceaux laser est déplacé progressivement en lignes et en colonnes de manière à produire une image constituée d'éclairs lumineux individuels, qui est répétée à une fréquence d'image supérieure à 16 Hz afin de produire une image stationnaire.
EP94920440A 1993-06-14 1994-06-09 Procede et dispositif permettant de produire des images bi- ou tridimensionnelles dans des substances gazeuses Expired - Lifetime EP0704085B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4319680A DE4319680A1 (de) 1993-06-14 1993-06-14 Verfahren und Vorrichtung zum Erzeugen von zwei- oder dreidimensionalen Bildern in gasförmigen Medien
DE4319680 1993-06-14
PCT/EP1994/001888 WO1994029837A1 (fr) 1993-06-14 1994-06-09 Procede et dispositif permettant de produire des images bi- ou tridimensionnelles dans des substances gazeuses

Publications (2)

Publication Number Publication Date
EP0704085A1 true EP0704085A1 (fr) 1996-04-03
EP0704085B1 EP0704085B1 (fr) 1997-03-26

Family

ID=6490315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94920440A Expired - Lifetime EP0704085B1 (fr) 1993-06-14 1994-06-09 Procede et dispositif permettant de produire des images bi- ou tridimensionnelles dans des substances gazeuses

Country Status (4)

Country Link
US (1) US5871267A (fr)
EP (1) EP0704085B1 (fr)
DE (2) DE4319680A1 (fr)
WO (1) WO1994029837A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837425A1 (de) * 1998-08-18 2000-03-02 Andre Srowig Vorrichtung zur volumetrischen Wiedergabe eines dreidimensionalen Bildes in autostereoskopischer Darstellung durch gepulste Plasmaerzeugung in natürlicher Atmosphäre mittels eines einzelnen fokussierten Laserstrahls
DE10127549A1 (de) * 2001-06-01 2002-12-05 Opto System Gmbh Verfahren zur Änderung des Abstrahlverhaltens in einem flächig ausgebildeten, lichtleitenden, transparenten Körper und Einrichtungen mit solchen Körpern
JP3650811B2 (ja) * 2002-02-13 2005-05-25 株式会社トプコン 空中可視像形成装置
AU2003304004A1 (en) * 2003-03-20 2004-10-11 Anton A. Dremlyuga Method and device for generating spatial images
US20060255020A1 (en) * 2005-05-16 2006-11-16 Igor Troitski Method for production of laser-induced images inside liquids
US7710643B2 (en) * 2007-01-31 2010-05-04 Alion Science And Technology Corporation Apparatus for and method of delivering visual image into air
DE102012014364B3 (de) * 2012-07-20 2013-11-28 Audi Ag Anzeigeeinrichtung
ES2614228B2 (es) * 2016-09-13 2018-01-09 Defensya Ingeniería Internacional, S.L. Dispositivo para la creación de señalización luminosa en el espacio circundante a uno o más vehículos
JP2019117227A (ja) * 2017-12-26 2019-07-18 トヨタ自動車株式会社 車載装置および車両システム
EP3951380A4 (fr) * 2020-01-16 2022-09-07 Anhui Easpeed Technology Co., Ltd. Dispositif d'affichage à ionisation d'air
CN111208193A (zh) * 2020-01-16 2020-05-29 安徽省东超科技有限公司 一种空气电离显示装置
DE102020124649A1 (de) 2020-09-22 2022-03-24 Bayerische Motoren Werke Aktiengesellschaft Verfahren und vorrichtung zum erzeugen einer volumengrafik

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914655A (en) * 1973-06-28 1975-10-21 Ibm High brightness ion source
DE3805053A1 (de) * 1988-02-18 1989-08-31 Heinrich Prof Dr Ing Reents Verfahren mit den dazu gehoerigen vorrichtungen zur lenkung eines laserstrahls mit hilfe einer flexiblen spiegelflaeche
US4870485A (en) * 1988-09-23 1989-09-26 Fmc Corporation Three dimensional image generating apparatus having a phosphor chamber
DE4027471C2 (de) * 1990-08-30 1994-10-13 Drescher Ruediger Gerät zur räumlichen Darstellung von Bildern
JPH04180084A (ja) * 1990-11-15 1992-06-26 Hiroshi Daimon 映像装置
DE4128949C2 (de) * 1991-08-31 1994-02-03 Drescher Ruediger Gerät zur räumlichen Darstellung von Bildern
JP3174607B2 (ja) * 1992-02-10 2001-06-11 株式会社日立製作所 三次元ディスプレイ装置
US5450147A (en) * 1992-09-28 1995-09-12 The Boeing Company Method for controlling projection of optical layup template utilizing cooperative targets
JP2729021B2 (ja) * 1993-10-13 1998-03-18 株式会社日立製作所 レーザで星空に重畳して画像を描く方法及び装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9429837A1 *

Also Published As

Publication number Publication date
WO1994029837A1 (fr) 1994-12-22
US5871267A (en) 1999-02-16
DE59402243D1 (de) 1997-04-30
EP0704085B1 (fr) 1997-03-26
DE4319680A1 (de) 1994-12-15

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